Exvhange server 2007 send as not working

Posted on 2011-02-15
Last Modified: 2012-05-11
Dear All, I have exchange server 2007 Cluster SCC working fine and I was assigning send as permission to users on some mailbox and it was working fine, from two days it stop working for users, I removed the permissions and re assign it again but it still not working and give this error to the users:
You are not allowed to send this message because you are trying to send on behalf of another sender without permission to do so. Please verify that you are sending on behalf of the correct sender, or ask your system administrator to help you get the required permission.
Diagnostic information for administrators:

Generating server:

Question by:KHDA
LVL 29

Expert Comment

ID: 34895593

Just wondering. Do any of your users have multiple SMTP addresses such as and assigned?

You can only send as in the from field using the primary SMTP address which is by design.

ChooseFrom for Microsoft® Exchange Server 2007/2010
LVL 20

Expert Comment

ID: 34898194

Accepted Solution

amg888 earned 500 total points
ID: 34904189
I recommend you to rebuild the GAL because I had this issue before, According to Microsoft the SEND-AS permission is AD attribute and Exchange uses GAL to retrive the users properties.
I rebuild the GAL and it workes ifne for me :)


Author Closing Comment

ID: 34904232
this worked with me

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